/// <summary>
/// Restore process state from a DataObject (obtained by calling SaveProcessState).
/// This is the preferred way of storing process state in NGinn. Of course
/// process instance can be binary serialized and saved, but the binary format
/// causes problems when upgrading class versions.
/// </summary>
/// <param name="dob"></param>
public void RestoreState(DataObject dob)
{
if (this._activated) throw new ApplicationException("Restore is not possible after activation");
string v = (string) dob["APIVersion"];
if (!APIVERSION.Equals(v))
{
log.Warn("Trying to restore process state from version {0}. API version is {1}", v, APIVERSION);
}
_instId = (string) dob["InstanceId"];
_definitionId = (string) dob["ProcessDefinitionId"];
_status = (ProcessStatus)Enum.Parse(typeof(ProcessStatus), (string) dob["Status"]);
_persistedVersion = Convert.ToInt32(dob["PersistedVersion"]);
_processInstanceData = (DataObject) dob["InstanceData"];
_correlationId = (string)dob["CorrelationId"];
_tokenNumber = Convert.ToInt32(dob["TokenNumber"]);
_transitionNumber = Convert.ToInt32(dob["TransitionNumber"]);
IList l = dob.GetArray("Token");
_tokens = new Dictionary<string, Token>();
if (l != null)
{
foreach (DataObject dob2 in l)
{
Token tok = new Token();
tok.RestoreState(dob2);
_tokens[tok.TokenId] = tok;
}
}
_activeTransitions = new Dictionary<string, TaskShell>();
l = dob.GetArray("Transition");
if (l != null)
{
foreach (DataObject dob2 in l)
{
TaskShell ts = TaskShell.RestoreTaskShell(dob2);
_activeTransitions[ts.CorrelationId] = ts;
}
}
foreach (Token tok in _tokens.Values)
{
if (tok.Status != TokenStatus.CONSUMED &&
tok.Status != TokenStatus.CANCELLED)
{
foreach (string atid in tok.ActiveTransitions)
{
if (!_activeTransitions.ContainsKey(atid)) throw new Exception("Invalid transition id: " + atid);
}
}
}
foreach (TaskShell ts in _activeTransitions.Values)
{
if (ts.Status == TransitionStatus.ENABLED ||
ts.Status == TransitionStatus.STARTED)
{
foreach (string tokid in ts.Tokens)
{
if (!_tokens.ContainsKey(tokid)) throw new Exception("Invalid token: " + tokid);
}
}
}
}